2L6/2N6/2N5/2N4
1-4-281
(8) Black or color dots appear on the image.
Print example Cause of trouble
1. Flawed or dirty transfer belt.
2. Dirty secondary transfer roller.
3. Dirty Fuser unit inside.
Defective part Check description Corrective Action
1
Intermediate trans-
fer belt unit
Check the intermediate transfer
belt cleaning.
1. Clean the cleaning pre-brush.
2. If it does not cure, replace the cleaning pre-
brush.
(see page 1-5-64)
Check if smears or scuffs appear
at a pitch of the circumference of
the intermediate transfer belt.
Replace the intermediate transfer belt unit.
(see page 1-5-62)
2
Secondary transfer
roller
Check the print image on paper
has a problem at an interval
equivalent to the circumference
of the secondary transfer
roller(75mm).
1. If the print image has a problem, clean the
secondary transfer roller.
2. If cleaning does not help improve the
symptom, replace the roller.
(see page 1-5-66)
3
Fuser unit Check the print image on paper
has a problem at an interval
equivalent to the circumference
of the fuser roller or the fuser
belt.
1. If the print image has a problem, clean the
fuser roller or the fuser belt.
2. If cleaning does not help improve the
symptom, replace the fuser unit.
(see page 1-5-68)